fr.cnes.sirius.patrius.math.transform

Class FastFourierTransformer

java.lang.Object

fr.cnes.sirius.patrius.math.transform.AbstractFastFourierTransformer

fr.cnes.sirius.patrius.math.transform.FastFourierTransformer

All Implemented Interfaces:

IFastFourierTransformer

public class FastFourierTransformer
extends AbstractFastFourierTransformer

This class allows the computation of a Fast Fourier Transform for all kind (odd or powers of two) orders.

Since:

2.3

Version:

$Id: FastFourierTransformer.java 18108 2017-10-04 06:45:27Z bignon $

Constructor Summary

Constructors

Constructor and Description
FastFourierTransformer(DftNormalization dftNormalization) Constructor of the class FastFourierTransformer, inherited from the one of the abstract class AbstractFastFourierTransformer

Method Summary

Modifier and Type	Method and Description
Complex[]	transform(Complex[] f, TransformType type) Returns the (forward, inverse) transform of the specified complex data set.
Complex[]	transform(double[] f, TransformType type) Returns the (forward, inverse) transform of the specified real data set.

Methods inherited from class fr.cnes.sirius.patrius.math.transform.AbstractFastFourierTransformer

getNormalization, normalizeTransformedData, transform

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

FastFourierTransformer

public FastFourierTransformer(DftNormalization dftNormalization)

Constructor of the class FastFourierTransformer, inherited from the one of the abstract class AbstractFastFourierTransformer

Parameters:

dftNormalization - an enum with two possible values : STANDARD or UNITARY

Method Detail

transform

public Complex[] transform(double[] f,
                           TransformType type)

Returns the (forward, inverse) transform of the specified real data set.

Parameters:

f - the real data array to be transformed

type - the type of transform (forward, inverse) to be performed

Returns:

the complex transformed array

transform

public Complex[] transform(Complex[] f,
                           TransformType type)

Returns the (forward, inverse) transform of the specified complex data set.

Parameters:

f - the complex data array to be transformed

type - the type of transform (forward, inverse) to be performed

Returns:

the complex transformed array